A second man has been arrested on suspicion of murder in connection with the death of Darrell Farnham.
The 42 year old was arrested on Thursday afternoon and is currently in police custody.
A 36-year-old woman has also been arrested on suspicion of assisting an offender and is in custody.
Mr Farnham, 44, was shot through the chest with a crossbow bolt on Sunday.
He was found ‘beyond help’ at his Belgrave Road home shortly after 10.45pm.
Floral tributes have been left in memory of Mr Farnham on his pick-up truck near where he died.
Earlier this week, police arrested a 40-year-old man from Aylesbury on suspicion of murder and a 37-year-old woman on suspicion of assisting an offender.
They are currently on bail until Friday.
Police have appealed for anyone with information to come forward.
Call police on 101 or Crimestoppers anonymously on 0800 555 111 with information.